Foundation pile-drill.



E. W. MINTER.

FOUNDATION PILE DRILL.

APPLICATION FILED JUNE 17, 1912.

1,067,363, Patented July 15, 1913.

643; Inventor:

UNITED. I sT 'rEs; PATENT orsion;

' (EDGAR w. Emma, or roux, N. Y.

rouNDA'rIoN FILE-DRILL.

Specification 6i Letters Patent. pateqigd J l 1 1913; Application filed June 17,1912. Serial No.'704,091.

To all who-m, may 001mm:

Be it known that I, EDGAR \V. Mmrnn, a citizen of the United States, residing in the cit-y, county, State of New York,.have 5 invented'a. new dndluseful Improvement in Foundation Pile brills, of which the fol lowing is a specification.

:M invention relates to the method of installing piles-in the grpund for the founda 10 tions of structures, an-d it is preferably adapted to concrete pileslg Concrete piles now in general use are divided into .two classes; .(aj. those made inplace where the pile hole is madeby amandrel and the wet concrete is .dro pped di-' pile is made by driving; a forininto the. .25 ground andfis filled-("with wet concrete;

Very frequently somethe sub-strata pen- 1 I etrated by the form arein a semi-fluid con- ,dit-iim and have not sufficient consistency to -serv'e as a "mold toj r'e'tain'theeoncrete in {shape The operator, however, canhave-no knowledge of this subsurface condition and fills in the-wet; concrete which is partly washed away or disseminated through the adjacent s0il. Under; such conditions also the wall of the hol'eis not stable and the surrounding earthy material presses in upon T the layers of .soft' concrete, squeezing them outof shape and robbing thejpile of its uniform structure and strength; The molded 40 pile is set in place by driving or jetting. If such a pile isdriven th shock ea'usedby' the impact of the hammei tends nohonly to break or shatterthe concrete shaft of the" pile, but also to affect the 'integrity-of adjacent structures. If it is jetted into place the operator has "nomeans-Uf ascertaining as the pile descends when the point of'required "resistance has been reached The object of my invention is to procure O the means for installing a pile quickly,

cheaply and securely, and to enable the operator to ascertain immediately at any stage of the work the actual character of the ground which the pile drill is then penetrating and when substance of sufiieient resistance has been reached in the penetration,

The installation of piles ofeither' permit the t 'be' t -ibeklen tion a cutting surface or head h h'. This head consists of 'tliiausirel v eton frame h which is inserted in and fats- -the center of the head 11, I insert and" The character and'application of m in- 'vention are illustrated in the accompanying drawing, in which- A V Figure 1 is-a vertical section Qf' 'tlie. .drill- .6 ing tube composing my invention completely equipped; Fig. 2 is a plan view'of the head plate of such tube; and F ig. -3-isj apla-n view Y of the head frame which, together-with said head plate, constitute theciover of the-tube. 65 Similar letters refer to similar parts throughout the several views.

I employ :a hollow steel drilling tube or shell D which is adaptedtojbe'rotated on its vertical axis downwardly intothe ground by means of some fsuitable mechahicalap paratus. The tube or shell-Dis ofjthelsaine diameter throughout its entire length and it constructed of sheets of-"metalformedinte a cylindrical shape. andof s'utficie'nt -v thickness so that the same -will; not 'buckle or crimp when the tube -is-- being rotated or screwed" into the ground;-';;Thejtube 'mayl also be made in -'se e tions capableof being screwed together,

which stri'ijction l 'wi ll a near-whe deep. bore is desired To fiacilitateipenetra Y dg'e d; attached at the lower edge 'olf theidrillirig and I have' found it oftengadvisablq-because of 8,5 the resisting cliaracterv -;;'of the/ground through which the :drilling' is being-done, to i provide a'saw'toothcutting edgv r IAt thetop of the tube-D I'provid ea metal te-ned to the top of said tube-and the'circula plate h which is laid upon and secured to 'said frame and completely covers and"herm'tically seals the top of the tube D.- v Into firmly attach the driving pipe which is. preferably octagonal. in f.section-- and -is adapted to engage and, together withthe tube D, to be rotated -by such mechanical apparatus as may-be employed therefor.- The pipe p-is connected at upper end to the feed pipe 1) which inturnis connected with a pump designed to force a stream of water or air through both pipes into the tube D. In order that the pipe p which drives the tube D may be rotated freely while the supply pipe p from theforce pump remains in a fixed position I join them together by the swivel collar 8. The pipe 72' attached to the swivel plate 8' in the swivel collar remains stationary while the collar '8 rotating'with the'driving pipe 22' revolves aroundit. A hole or port a is provided in the head plate it together with a cover adapted to fit air tight thereon and to beiremo'ved whenever desirable for the purpose of inserting a sounding rod or light through thesame into the tube D While the drilling is being done. By this means the interior of the tube and the character of the soil which it isthen'penetrating may be ex muined at any stage of thework. v For the purpose of low-ering'or raising the drilling tube-D handles or clamps eeare provided by means of which and of an appropriate pulling device the tube may be raised or lowered or withdrawn from the ground after the drilling is completed.

Then the drill is in operation a current of water is driven throughthe pipes p and 7) and through the tube D and expedites the penetration bysoftening the earthy' material which forms the core of the drill. It also automatically expels the excavated material from the tube by forcing the same out under the cutting edge (Z as the drill descends. vAfter the drilling tube ,D has penetrated to the depth required the Water re- ,maining Within the tubelis expelled there from by a current of air 1nJected into the drill through the pipes 79 and-p and the head hhis removed fro nthe top ofthe tube. A charge of Wet, concrete is then dropped into the tube to form a base or foundation for the pile, the pileis then inserted and the drilling tube is Withdrawn by means of the clamps e-e',,'leaving the pile duly installed in lace.

I have foundthat t e best results are accomplished by the use of a watertight head secured to the drilling tube in conjunction with a pipe s0 adapted thata. stream of air or water may'be forced IIItO and through the tube such as is i llustrated in F 1 and Zin the said draw ng, but 1 do not confine my invention thereto The head maybe (if skeleton or open formation'only as is 111115- trated in Fig. ,3, andjthe agency'of air. or

water in expelling thewater and other ma v tGIlillS Winch form the core either drilling Copies of this patentmay be obtained for five cents each, by

' Washington, D. G.

tube may be dispensed with without departing from the spirit of my invention. In the former case thepressure of the air or water,

jets or forces outthe said materials composing such core as fast as the drill tuberclescends; 1n the latter case the core is removed 4 by a sand bucket or other mechanical device.

of and completely covers and hermetically" seals the same, said head being provided with the port a and the removable cover 0 adapted to'fit airtight thereon, substantially as described.

The combination of the cylindrical mctal'drilling tube D adapted to be rotated downwardly into the ground-and a head therefor whichfis constructed. in 'slrele ton form and is so securedto said tube at the top "thereof as to be eazrsilfy and quickly.

removable therefrom, substantially as described.

'- e. The combination of the melanin:

drical drilling tube D adapted to be rotated on its verticalaxis downwardly .into tlie' ground and provided with the cutting edge (l; the head h h which is securedto the top of said tube and hermeticallysealsthe A same; the port a in said head and the removable cover 0 fitting tightly -th ereon;1the pipe p attached to the pipe 11% by the swivel collar 8 and adapted to :conduct a stream or", air or Water through the head into the tube 1); and the handles clamps "0' a; substantially as described. W

"EDGAR Wiirurnn.

Witnesses:

- Gnirronn H. Eoannson,

J. ALFRED ANGUS.

addressing the Commissioner of Patents, 

